Increasing the Accuracy and Coverage of SQL Progress Indicators

Tokyo, Japan April 05-April 08

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http://doi.ieeecomputersociety.org/10.1109/ICDE.2005.79

21st International Conference on Data ...

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	ASCII Text	x
	Gang Luo, Jeffrey F. Naughton, Curt J. Ellmann, Michael W. Watzke, "Increasing the Accuracy and Coverage of SQL Progress Indicators," Data Engineering, International Conference on, pp. 853-864, 21st International Conference on Data Engineering (ICDE'05), 2005.

	BibTex	x
	@article{ 10.1109/ICDE.2005.79, author = {Gang Luo and Jeffrey F. Naughton and Curt J. Ellmann and Michael W. Watzke}, title = {Increasing the Accuracy and Coverage of SQL Progress Indicators}, journal ={Data Engineering, International Conference on}, volume = {0}, year = {2005}, issn = {1084-4627}, pages = {853-864}, doi = {http://doi.ieeecomputersociety.org/10.1109/ICDE.2005.79}, publisher = {IEEE Computer Society}, address = {Los Alamitos, CA, USA}, }

	RefWorks Procite/RefMan/Endnote	x
	TY - CONF JO - Data Engineering, International Conference on TI - Increasing the Accuracy and Coverage of SQL Progress Indicators SN - 1084-4627 SP853 EP864 A1 - Gang Luo, A1 - Jeffrey F. Naughton, A1 - Curt J. Ellmann, A1 - Michael W. Watzke, PY - 2005 KW - null VL - 0 JA - Data Engineering, International Conference on ER -

Gang Luo, IBM T.J. Watson Research Center

Jeffrey F. Naughton, University of Wisconsin-Madison

Curt J. Ellmann, University of Wisconsin-Madison

Michael W. Watzke, NCR

Recently, progress indicators have been proposed for long-running SQL queries in RDBMSs. Although the proposed techniques work well for a subset of SQL queries, they are preliminary in the sense that (1) they cannot provide non-trivial estimates for some SQL queries, and (2) the provided estimates can be rather imprecise in certain cases. In this paper, we consider the problem of supporting non-trivial progress indicators for a wider class of SQL queries with more precise estimates. We present a set of techniques in achieving this goal. We report an initial implementation of these techniques in PostgreSQL.

Citation:

Gang Luo, Jeffrey F. Naughton, Curt J. Ellmann, Michael W. Watzke, "Increasing the Accuracy and Coverage of SQL Progress Indicators," icde, pp.853-864, 21st International Conference on Data Engineering (ICDE'05), 2005

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